So I've had windows installed on 2x Corsair Force GT 90gb SSDs in raid 0 for a couple of years now. I'm a bit concerned about one of the drives failing and I've been planning on reinstalling windows onto these drives in raid 1. Problem is that I only have a windows 8.1 install disk, and Microsoft's free period for windows 10 is over. Is there anyway for me to reinstall windows 10 onto my raid 1 array without having to buy Windows 10? I apologies if this has been posted already, and I appreciate any help.